cooke



(No Model.) 1

G. K. COOKE.

` GAS BURNER. No. 379,562. Patented Mar. 20, 1888.

Flc-I l 'I l H132,

WIT E55 E5, INVENTDR,

NrrE STATESV ATENT Erice.

GEORGE K. COOKE, OF NEW YORK, N. Y., ASSIGNOR TO D. SACKETT MOORE, OFSAME PLACE.

GAS-BURNER.

SPECIFICATION forming part of Letters Patent N o. 379.5762, dated March20, 1.888.

Application filed September 6, 1887. Serial No. 248.928. (No model.l

To aZZ whom it may concern:

Be it known that I, GEORGE K. COOKE, of New York city, New York, haveinvented a new and Improved Gas-Burner, of which the following is aspecification.

This invention relates to a gas-burner ofthe kind which when turned offstill admits a limited supply of gas sufficient for a minute flame. Thusthe burner can be turned on without the ro use of a match. The burner isprovided with a sliding chimney, which is raised up to surround thesmall flame a short time after the main flame has been turned off. Inthis way the chimney will not be apt to become cracked by the mainflame, and will still protect the small dame.

The invention consists in the various fea. tures of improvement, morefully pointed out in the claim.

In the accompanying drawings, Figure l is a front View of my improvedburner with the chimney down. Fig. 2 is a side view thereof with thechimney up. Fig. Sis a vertical central section of the burner proper.Fig. 4 is a 4section on line .c x, Fig. 3. Fig. 5 is a section onlineyy, Fig. 3. Fig. 6 is a side view of the valve-plug, showinginlet-opening of slit j; Fig. 7, a similar view showing theoutlet-opening ofslitj.

The lettera represents the gas-inlet pipe en tering the valve-seat b,from which projects upwardly the discharge -pipe c, having the usualtip. i

d is the tapering plug-valve projecting beyond the valveseat at bothends. These eX- posed ends are squared and are embraced by anoscillating frame consist-i ng of two U -shaped pieces, e, havinglaterally-projecting arms e' and perforated centrally to fit upon theends 4o of the plug-valve.

ff' are chains connected to arms e', andgis a pivoted link connectingthe oscillating frame to the cap 7i, carrying chimney 'i'. By pullingeither the chain f orf', the chimney is raised or lowered, and at thesame time the plugvalve is partially revolved.

The plug d is provided with a transverse slit, j, connecting the inletwith the dischargepipe, though intercepted by an axial perforation, lr.The slitj should be long and narrow at its discharge end, (see Fig. 7,)so as to be brought rapidly past the pipe c when the The slit j servesfor the pasplug is turned.

sage of the gas that supplies the large or main flame. For the auxiliaryflame there is a perforation, Z, smaller than slitj, and connecting theaxial perforation k with the surface. Here the perforation Z joins ashort groove, m, partly encircling plug d. The inlet end of slit j isalso connected to an encircling groove, n.

When the chain f ispulled down, the chimney z'islowered, and at the sametime the plug d is revolved to bring the slitj in line with the pipes ao, and thus cause a full supply of gas, Fig. 3, for the main flame.

WVhen the chain f is subsequently pulled down, the first fraction ofrotation of plug d will bring the slitj past the mouth of pipe c, andtherebyV quickly cut off the main supply of gas. In order to carry thisout, this slit, 7o as before stated, should be long and narrow, and the-lower end, c', of pipe c should also be long and narrow. (See Figs. 3,4, and 5.) Thus enough gas can be admitted by these parts to feed themain liame, and still the main 7 5 flame can be very quickly cut off.This is necessary, because the main dame should disappear before theframe e has oscillated sufficiently far to raise the chimney il up tothe dame, for otherwise the chimney would-be 8o cracked or injured bythe main flame. The main dame being thus turned off, gas will be fed,through groove n, slit j, central perforation, 7c, perforation l, andgroove m, into the contracted mouth c of pipe c, to supply the auxiliarydarne.

In order to regulate the size of the auxiliary iame, I make use of aset-screw, 0, entering axial perforation 7c, and of such a length thatit may close up the perforation Z to a greater 9o or less extent, Fig.3.

p is a spring, between the oscillating frame and the plug d, for holdingthe latter tightly to its seat.

The combination, in a gasburner, of the pipe a, valve-seat b, and pipec, having long and narrow-slitted mouth c', with the valve d, having adirect gas-passage, j, with a long and narrow discharge end, and havingan auxil- IOO iary gas passage, and with an oscillating frame connectedto the chimney-cap 7L and operating the valve, substantially asspecified.

Witnesses: GEORGE K. COOKE.

F. v. BRIESEN, WM. A. LOWE.

